Exhausting apparatus



Dec. 14, 1954 H. w. SCHAUFELBERGER 2,696,701

EXHAUSTING APPARATUS Filed July 5, 1951 4 Sheets-Sheet 1 nv l/ENTOR H B. SGHAUFEL BERGER A TTOANEY Dec. 14, 1954 H. w. SCHAUFELBERGER 2,696,701

I EXHAUSTING APPARATUS Filed July 5, 1951 4 Sheets-Sheet 2 INVENTOR .8. $CHAUFELBRGER ATTORNEY Dec. 14, 1954 H. w. SCHAUFELBERC EER 9 EXHAUSTING APPARATUS Filed July 5, 1951 4 Shee'ts-$heet 3 I WL Q2] INVENTOR H. B. SCI-MUFELBERGER ATTORNEY Dec. 14, 1954 H'. w. SCHAUFELBERGER 2,696,701

EXHAUSTING APPARATUS Filed July: 5, 1951' 4 Sheets-Sheet 4 lllllllllll 'uvvavmp H B. SCHAUFELBERGER By MM ATTORNEY United States Patent Cihce 2,696,701 Patented Dec. 14, 1954 EXHAUSTIN G APPARATUS Henry W. Schaufelberger, Union, N. 1., assignor to Western Electric Company, Incorporated, New York, N. Y., a corporation of New York Application July 5, 1951, Serial No. 235,153

3 Claims. :(Cl. 51-273) This invention relates to exhaust apparatus. for grinding machines particularly machines of the type which are highly adjustable and have multiple spindles to receive grinding wheels of various sizes and contours.

The standard grinding machines with fixed positioned grinding wheels are usually equipped with exhaust hoods to be readily attached to the conventional exhaust lines. However, certain commercially known grinding machines, provided with spindles to receive various types and sizes of grinding wheels mounted with their driving unitsfor adjustment into various positions, are not equipped with exhausting means to receive the particles resulting from grinding operations, and remove them from the area of the grinding machine. Furthermore, conventional fixed position exhausting hoods could not be employed in machines of this type due to the adjustability of the machine and its adaptability to grinding wheels of various sizes and contours.

it is the object of'the present invention to provide a simple yet highly eflicient exhausting apparatus for grinding machines of the type which are adapted to selectively support various types and sizes of rotatable grinding wheels and adjustable to locate .a selected grinding wheel in various positions relative to an exhaust line.

With this and other objects in View the exhaust apparatus for the particular type of grinding machine .in cludes a suction head mounted adjacent the grinding wheel with means to connect the suction head to the exhaust line and including .a deflector extending from the suction head .to a position adjacent a grinding wheel whereby the particles resulting from the grinding perations will impinge against the deflector and be .directed into the suction head.

Due to the adjustabihty of the grinding machlne, selected to illustrate the invention, the suction head supported for adjustment relative to the selected 1 grinding wheel and is provided with a hood partially surrounding the grinding wheel and cooperating with the deflector to completely surround the :area where the particles from the wheel will travel. The deflector is pivotallysupported adjacent the suction head and provided with sides which overlap the sides of .the hood closing the area where the particles are directed regardless of the position of the deflector, which is varied depend- .ing upon the size of the grinding wheel selected and the reduction in the size of the grinding wheel due to wear, to keep the deflector in the preferred position relative to the cutting surface of the grinding wheel.

Other objects and advantages will be apparent from the following detailed description when considered in conjunction with the accompanying drawings wherein:

Fig. .l is a top plan view of the exhausting apparatus as appliedto a grinding machine selected to illustrate the invention;

Fig. 2 is a1front elevational view of the structure shown in Fig. 1, portions thereof being broken away;

Fig. .3 isa side elevational view of the structure shown in Fig. 2, looking from the left of this figure, portions thereof being broken away;

Fig. 4 is a fragmentary sectional view taken along the line 4--4 of Fig. 1;

Fig. 5 is a fragmentary sectional view taken along the line 55 of Fig. 4; and

Fig. 6 is a fragmentary sectional view taken along the line 6-6 of Fig. 1.

Referring now to the drawings, attention is first directed to the grinding machine which has been selected porting .a'turret 12. The turret 12 may be rocked about its axis which is coincident with the center of the dial member 11, into any selected position and locked in this position by suitable means (not shown). A power means 14 which may include one or two motors i's mounted on the turret 12 with aligned driving spindles 15 and 16 extending from opposite ends thereof. The spindles 15 and 16 are adapted to receive and support various types and sizes of grinding wheels. In the present illus tration a disc-type grinding wheel 18 is mounted on the spindle 16 while a cup-shaped grinding wheel 19 is mounted on the spindle 15.

The exhausting apparatus includes suction heads 20 and 21 which are similar in structure and positioned .adjacent their respective grinding wheels 18 and 19. Aligned bars 22 and '23 are secured in selected adjustable positions to the turret .12 by clamps 25. The clamps 25 have their lower ends positioned in elongate grooves 27 of the turret permitting lateral adjustment of the bars relative to their grinding wheels. The clamps 25 are also constructed so that when they are loosened, the bars may be adjusted longitudinally until their desired positions have been selected after which tightening of the clamps will secure the bars in place. Other clamps 29 carried by the bars 22 and ,23 are secured to hoods 30 and .31 of the suction heads 29 and 21 to mount the suction heads with their hoods at selected positions relative to their grinding wheels. The clamps 29 are secured in their selected positions by the tightening of nuts 34.

By viewing Figs. "2, '3, and 6 the general contour of the suction head 21 and its hood 31 will be apparent. The suction head 21 is much greater in length than the diameter of its grinding wheel 19 so as to extend through and beyond the area where all possible particles from the grinding wheel may pass. An elongate slot 36 extending substantially the full length of the suction head 21 is positioned adjacent the bottom of the nozzle 21 to receive the particles. Although the hood 3,1 tapers downwardly from its highest point at the right of Fig. 3 to a position short of the aperture '36, the back and side portions of the hood partially surround the area through which the particles travel. A deflector ,38 pivotally supported at 39 adjacent its lower edge short of the aperture .36 ,has side portions 40 which overlap the sides of the hood 31 to cooperate with the hood in completely surrounding the area for the particles. A lock nut 4-1 carried by the adjacent .side of the hood 31 is positioned to engage the side of the deflector 38 and lock the defiector at any selected position relative to its grinding wheel.

The suction head 20 is substantially identical in structure to the suction head 21. The main difference lies .in the adjustable feature of the suction head 20 which is particularly adapted for the disc-type grinding wheel 18. This adjustable feature is shown in Figs. 4 and 5 which illustrate the nozzle formed in two parts indicated generally at 45 and 46 positioned so that they may telescope one within the other to be extended for a new or large grinding wheel and shortened for a smaller or worn grinding wheel. A locking screw 48 carried by the portion 45 extends through an elongate aperture 49 in an arm secured to the portion 46 to secure the portion 46 in any desired position relative to the portion 4'5. The suction head 20 is provided with a hood 50 which partially surrounds the area where the par- .ticles from the grinding wheel will be directed. Cooperating with the hood .50 .is a deflector 51 pivoted near its lower edge at 52 and provided with an end which will overlap an adjacent end .of the hood 50. A lock nut 53 carried by the end of the hood 501's positioned to engage the adjacent ends 'of the deflector 51 and secure the deflector 'in any selected position.

A flexible exhaust line 55, connected to the conventional exhaust system to provide suitable suction to draw the particles resulting from grinding operations through their respective suction heads 20 and 21, extends downwardly to a suitable position near the center of the exhausting apparatus. A valve housing 57 is mounted in a suitable position between the suction heads and connected at 58 to the exhaust line 55. The valve housing 57 has diametrically opposed inlets 59 and 60 connected to the outlets of the suction heads and 21 with flexible hose 61. The flexible hose in each instance is made of a suitable length to form a loop between its ends to allow for adjustment of the grinding machine into any selected position without disturbing the exhausting apparatus. The valve housing 57 has suitable passageways 68 and 69 under the control of valves 70 and 71 which are shown in their closed positions in Figs. 1 and 2. Either one or both of the valves may be swung downwardly into their open positions, depending upon which grinding wheel is being used.

Considering now the operation of the exhausting apparatus, it will be apparent that the apparatus is highly adjustable to locate the exhausting units of the apparatus in any selected position relative to their grinding wheels regardless of the size or contour of the grinding wheels. The hoods associated with the suction heads are brought into chosen positions back of the grinding wheels with their ends located beyond the areas where the particles resulting from the grinding operations will be directed so as to assure against any of the particles escaping from the exhausting units of the apparatus. The exhausting units may be operated singly or simultaneously and regardless of the positions of their grinding wheels about the axis of the turret, the exhausting units will at all times follow their grinding wheels. In some instances in machines of this type the heads supporting the power means and the grinding wheels may be tilted into various angles in addition to their adjustable features about the axis of the machine. Regardless of the positions into which the grinding wheels are moved, the exhausting units will follow the wheels at all times. Furthermore, the deflectors of the exhausting units are adjustable toward and away from their grinding wheels to assist in closing the areas for the particles and provide surfaces against which the particles may impinge to direct them toward the elongate apertures of their suction heads.

It is to be understood that the above described arrangements are simply illustrative of the application of the principles of the invention. Numerous other arrangements may be readily devised by those skilled in the art which will embody the principles of the invention and fall within the spirit and scope thereof.

What is claimed is: v

1. An exhaust apparatus for connection with an ex- .haust line and for use on a turret type grinding machine wherein a turret adjustable about its axis supports a drive shaft at right angles to its axis for various types and sizes of grinding wheels, the exhaust apparatus comprising a support mounted on the turret for movement therewith relative to the exhaust line, an elongate suction head mounted at any selected position on the support relative to a selected grinding wheel on the drive shaft and having an opening extending the full length of the area Where, particles resulting from grinding will travel, means mounted on the support to connect the suction head to the exhaust line, a hood mounted on the suction head and having back and side members partially surrounding the said area, the back member being disposed at right angles to the shaft at one side of the grinding wheel while the side members are parallel therewith, and a deflector pivotally supported by the suction head for movement relative to the hood to compensate for grinding wheels of various types and sizes and having a front member disposed substantially at right angles to the shaft and side members positioned for overlapping association of said parallel side members of the hood whereby areas of various sizes may be surrounded and the deflector positioned to deflect particles resulting from grinding into the opening of the suction head.

2. An exhaust apparatus for connection with an exhaust line and for use on a turret type grinding machine wherein a turret adjustable about its axis supports a drive shaft at right angles to its axis for various types and sizes of grinding wheels to be mounted on the ends thereof, the exhaust apparatus comprising a support mounted on the turret for movement therewith relative to the exhaust line, elongate suction heads mounted at selected variable positions on the support adjacent the selected grinding wheels on the ends of the drive shaft and having openings extending the full length of the areas where particles resulting from grinding will travel, a unit mounted on the support to connect the suction heads to the exhaust line, hoods mounted on their respective suction heads and having back and side members partially surround the said areas, the back members being disposed at right angles to the shaft at one side of each of the grinding wheels while their respective side members are parallel therewith, and deflectors pivotally supported by their suction heads for movement relative to their respective hoods to compensate grinding wheels of various types and sizes and having front members disposed substantially at right angles to the shaft and side parallel members positioned for overlapping association of their respective parallel side members of the hoods whereby areas of various sizes may be surrounded and the deflectors positioned to deflect particles resulting from grinding into the openings of the suction heads.

3. An exhaust apparatus for connection with an exhaust line and for use on a turret type grinding machine wherein a turret adjustable about its axis supports a drive shaft at right angles to its axis for various types and sizes of grinding wheels to be mounted on the ends thereof, the exhaust apparatus comprising a support mounted on the turret for movement therewith relative to the exhaust line, elongate suction heads mounted at selected variable positions on the support adjacent the selected grinding wheels on the ends of the drive shaft and having openings extending the full length of the areas where particles resulting from grinding will travel, a unit mounted on the support to connect the suction heads to the exhaust line, hoods mounted on their respective suction heads and having back and side members partially surround the said areas, the back members being disposed at right angles to the shaft at one side of each of the grinding wheels while their respective side members are parallel therewith, and deflectors pivotally supported by their suction heads for movement relative to their respective hoods to compensate for grinding wheels of various types and sizes and having front members disposed substantially at right angles to the shaft and parallel side members positioned for overlapping association of their respective parallel side members of the hoods whereby areas of various sizes may be surrounded and the deflectors positioned to deflect particles resulting from grinding into the openings of the suction heads and means disposed in the unit and actuable to selectively connect and disconnect the suction heads to the exhaust line.

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